Melapur 200 Melamine polyphosphate 218768-84-4 Ciba Flame and Smoke Retardants >> Melamine based Flame and Smoke Retardants >> Phosphorus based Polyamides (PA) Halogen free melamine based flame retardant for glass fiber reinforced PA66. MELAPUR 200 (melamine polyphosphate) is a salt of melamine and polyphosphoric acid, suitable as flame retardant for glass fiber reinforced polyamide 66. MELAPUR 200 is a melamine based halogen free flame retardant for glass fiber reinforced polyamide 66. MELAPUR 200, melamine polyphosphate, is a halogen-free flame retardant, developed especially for glass fiber reinforced polyamide 66. As a white powder it opens up new and broader colour schemes for flame retarded glass fiber reinforced PA 66. The mechanism is based on intumescence. At exposure to fire a strong and stable char is formed which protects the polymer and prevents further flame propagation. The good balance between intumescence and thermal stability of MELAPUR 200 provides a processing window of up to 320oC. Excellent health and safety data offer additional handling and processing advantages. Salt of melamine and polyphosphoric acid. Used as a halogen-free flame retardant for glass fiber reinforced polyamide 66. Offers a good balance between intumescence and thermal stability. Provides a processing window of up to 320°C.